CN103546989A - Method and equipment for establishing radio resource control connection - Google Patents
Method and equipment for establishing radio resource control connection Download PDFInfo
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- CN103546989A CN103546989A CN201310470411.2A CN201310470411A CN103546989A CN 103546989 A CN103546989 A CN 103546989A CN 201310470411 A CN201310470411 A CN 201310470411A CN 103546989 A CN103546989 A CN 103546989A
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Abstract
An embodiment of the invention provides a method and equipment for establishing radio resource control (RRC) connection. The method includes that a base station receives an RRC reestablishment request transmitted by UE (user equipment); the base station determines that state information of the UE indicates a handover process state; the state information of the UE is modified to indicate a steady state when the base station determines that the base station is a post-handover target base station of the UE and determines that the RRC reestablishment request contains relevant information of a post-handover target cell; the legitimacy of corresponding information in the relevant information needs to be verified, the corresponding information is verified, and RRC reestablishment information is transmitted to the UE after the legitimacy of the corresponding information in the relevant information is successfully verified, and the UE is instructed to establish RRC connection. The method and the equipment have the advantages that the method and the equipment are used for completing an RRC reestablishment process according to the RRC reestablishment request of the UE, so that call drop of the UE can be prevented, a KPI (key performance pointer) of a network can be increased, and the efficiency of the network can be improved.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method and apparatus of setting up Radio Resource control connection.
Background technology
In wireless network, when subscriber equipment (User Equipment, UE) switches to Target cell from cell-of-origin, as shown in Figure 1, the signaling process that S1 interface switches as shown in Figure 2 for the signaling process that X2 interface switches.Can find out, when receiving the Radio Resource that cell-of-origin sends, UE controls (Radio Resource Control, RRC) connect and reshuffle after (RRC Connection Reconfiguration) message, RRC can be connected and reshuffle (RRC Connection Reconfiguration Complete) message transmission Target cell, network side connects and to have reshuffled after message receiving RRC, has continued handoff procedure.
Owing to disturbing or environmental factor, Target cell high level may be confiscated RRC connection and reshuffle message, causes handoff failure.In this case, UE can initiate RRC in the Target cell of switching and re-establish process, and in the RRC that sends to Target cell re-establishes request, carries the relevant information (C-RNTI/PCI/shortMAC-I) of Target cell.And in prior art, base station cell receives RRC and re-establishes processing after request as shown in Figure 3, comprise that step is as follows: S301, base station receive the RRC that UE initiates and re-establish request; S302, judge whether that UE carries PCI Target cell, Target cell and initiates to re-establish process; If so, perform step S303; Otherwise, execution step S305; S303, base station send RRC to UE and re-establish refuse information; S304, UE call drop, again initiate RRC and connect process of establishing; Finish; S305, enter routine and re-establish processing procedure; Finish.According to above step, can find out, the in the situation that of UE handoff failure, if Target cell receives the RRC of the relevant information of carrying Target cell of UE transmission, re-establish request, the RRC that UE can be refused in Target cell re-establishes request.Correspondingly, as shown in Figure 4, the signaling process that S1 interface switches as shown in Figure 5 for the signaling process that X2 interface switches; Wherein, dotted line represents signalling failure.
Target cell refusal RRC re-establishes request, because UE handoff failure is thought in Target cell, under agreement 3GPP36.331 regulation failed handoff scenario, it need to be the value of cell-of-origin that RRC re-establishes the request C-RNTI and the PCI that carry, and Target cell receives, is that the RRC that carries the relevant information of Target cell re-establishes request.Agreement 3GPP36.331 re-establishes message element (the Information Element of request message to RRC, IE) in the requirement arranging, include following content: 1, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (Cell Radio Network Temporary Identifier, C-RNTI) C-RNTI that is set to use in cell-of-origin (handoff failure and from Evolved UTRAN (Evolved Universal Terrestrial Radio Access, E-UTRA) shift out in the situation of failure), or the C-RNTI (other situations) of the community use of triggering reconstruction; 2, Physical Cell Identifier (Physical Cell Identifier is set, PCI) be the Physical Cell Identifier of cell-of-origin (handoff failure and shift out the situation of failure from E-UTRA), or trigger the Physical Cell Identifier (other situations) 3 of the community rebuilding; Short message integrity authentication code (short Message Authentication Code for Integrity is set, shortMAC-I) be low 16 (bit) of the message integrity authentication code (Message Authentication Code for Integrity, MAC-I) that calculates.So Target cell can directly be replied RRC to UE according to protocol requirement and be re-established refusal (RRC Connection Reestablishment Reject) message.
In sum, the handling process that base station cell re-establishes request to RRC is at present unreasonable, the RRC that the direct refusal in Target cell that UE switches carries Target cell relevant information re-establishes request, cause UE call drop, affect network key performance indicators (Key Performance Indicator, KPI).
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus of setting up Radio Resource control connection, for re-establishing request according to the RRC of the UE of handoff procedure, completes RRC and re-establishes process, avoids UE call drop, improves network KPI index, promotes network efficiency.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
First aspect, a kind of method of setting up radio resource control RRC connection, comprising:
The RRC that base station receives UE transmission re-establishes request;
Described base station determines that the state information of described UE is handoff procedure state;
When the target BS after switching as described UE is determined in described base station, and determine described RRC re-establish request comprise switch after during the relevant information of Target cell, the state information of described UE is revised as to lower state;
The corresponding information that needs in described relevant information to verify legitimacy is verified, and after checking is legal, to described UE, is sent RRC and re-establish message, be used to indicate described UE and set up RRC connection.
RRC under failed handoff scenario is re-established to the RRC being converted under stable state to be re-established; Like this, the RRC that UE need not directly be refused in base station re-establishes request, but re-establish the cell information that carries of request according to RRC, proceeds RRC and re-establishes process.
In conjunction with first aspect, in the possible implementation of the first, the relevant information of described Target cell, specifically comprises:
The Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that UE is used in Target cell, the Physical Cell Identifier PCI of Target cell, and UE offers the short message integrity authentication code shortMAC-I of Target cell.
In conjunction with the possible implementation of the first of first aspect, in the possible implementation of the second, the corresponding information that needs in described relevant information to verify legitimacy is verified, specifically comprise:
The C-RNTI that described UE is used in Target cell verifies; And the shortMAC-I that described UE is offered to Target cell verifies.
In conjunction with the possible implementation of the second of first aspect, in the third possible implementation, the shortMAC-I that described UE is offered to Target cell verifies, specifically comprises:
The base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, cell information as UE before RRC re-establishes process, and, the base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, the cell information as UE after RRC re-establishes process; The base station key of described Target cell is predetermined;
Cell information according to described UE before RRC re-establishes process and the cell information of described UE after RRC re-establishes process, and secret key deduction function (Key Derivation Function, KDF), determine that UE need to offer the shortMAC-I of Target cell;
Judge that described UE need to offer the shortMAC-I of Target cell whether consistent with the shortMAC-I that described UE offers Target cell, if so, determine that UE offers the shortMAC-I of Target cell legal; Otherwise, determine that UE offers the shortMAC-I of Target cell illegal.
For UE, Target cell is community and the UE community RRC re-establish process after of UE before RRC re-establishes process in fact simultaneously, like this, the key that the key that Target cell calculates could provide UE is that shortMAC-I carries out legitimate verification.
In conjunction with first aspect, in the 4th kind of possible implementation, the method also comprises:
When checking is illegal, described base station sends RRC to described UE and re-establishes refuse information, for refusing the RRC of described UE transmission, re-establishes request.
Second aspect, a kind of base station equipment, comprising:
Request reception unit, re-establishes request for receiving the RRC of UE transmission;
Status determining unit, for determining that the state information of described UE is handoff procedure state;
State set unit, for the target BS when determining after switching as described UE, and determine described RRC re-establish request comprise switch after during the relevant information of Target cell, the state information of described UE is revised as to lower state;
Set up message sending unit, for needing the corresponding information of verifying legitimacy to verify to described relevant information, and after checking is legal, to described UE, sends RRC and re-establish message, be used to indicate described UE and set up RRC connection.
RRC under failed handoff scenario is re-established to the RRC being converted under stable state to be re-established; Like this, the RRC that UE need not directly be refused in base station re-establishes request, but re-establish the cell information that carries of request according to RRC, proceeds RRC and re-establishes process.
In conjunction with second aspect, in the possible implementation of the first, the relevant information of described Target cell, specifically comprises:
The Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that UE is used in Target cell, the Physical Cell Identifier PCI of Target cell, and UE offers the short message integrity authentication code shortMAC-I of Target cell.
In conjunction with the possible implementation of the first of second aspect, in the possible implementation of the second, the described message sending unit of setting up when described relevant information being needed to verify that the corresponding information of legitimacy is verified, specifically comprises:
C-RNTI authentication unit, verifies for the C-RNTI that described UE is used in Target cell; And shortMAC-I authentication unit, verifies for described UE being offered to the shortMAC-I of Target cell.
In conjunction with the possible implementation of the second of second aspect, in the third possible implementation, described shortMAC-I authentication unit, specifically for:
The base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, cell information as UE before RRC re-establishes process, and, the base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, the cell information as UE after RRC re-establishes process; The base station key of described Target cell is predetermined;
Cell information according to described UE before RRC re-establishes process and the cell information of described UE after RRC re-establishes process, and secret key deduction function (Key Derivation Function, KDF), determine that UE need to offer the shortMAC-I of Target cell;
Judge that described UE need to offer the shortMAC-I of Target cell whether consistent with the shortMAC-I that described UE offers Target cell, if so, determine that UE offers the shortMAC-I of Target cell legal; Otherwise, determine that UE offers the shortMAC-I of Target cell illegal.
For UE, Target cell is community and the UE community RRC re-establish process after of UE before RRC re-establishes process in fact simultaneously, like this, the key that the key that Target cell calculates could provide UE is that shortMAC-I carries out legitimate verification.
In conjunction with second aspect, in the 4th kind of possible implementation, this equipment also comprises:
Refuse information transmitting element, for when checking is illegal, sends RRC to described UE and re-establishes refuse information, for refusing the RRC of described UE transmission, re-establishes request.
Accompanying drawing explanation
Fig. 1 is the normal schematic flow sheet switching of X2 interface in prior art;
Fig. 2 is the normal schematic flow sheet switching of S1 interface in prior art;
Fig. 3 is that in prior art, the schematic flow sheet that RRC re-establishes request is processed in base station;
Fig. 4 is the schematic flow sheet of X2 interface handoff failure in prior art;
Fig. 5 is the schematic flow sheet of S1 interface handoff failure in prior art;
Fig. 6 is the schematic flow sheet of the method that connects of a kind of RRC of foundation that the embodiment of the present invention provides;
Fig. 7 is the carrying out that provides of embodiment of the present invention schematic flow sheet that X2 interface that RRC re-establishes switches;
Fig. 8 is the carrying out that provides of embodiment of the present invention schematic flow sheet that S1 interface that RRC re-establishes switches;
Fig. 9 is that the schematic flow sheet that RRC re-establishes request is processed in the base station that the specific embodiment of the invention provides;
Figure 10 is the schematic flow sheet of the secret key deduction method that provides of the specific embodiment of the invention;
Figure 11 is the schematic flow sheet of another secret key deduction method of providing of the specific embodiment of the invention;
Figure 12 is the structural representation of a kind of base station equipment of providing of the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of method and apparatus of setting up Radio Resource control connection, be applied to 3G (Third Generation) Moblie technology (3rd-Generation, 3G), Long Term Evolution (Long Term Evolved, LTE), senior Long Term Evolution (Long Term Evolved-Advanced, the Radio Network System such as LTE-A), for re-establishing request according to the RRC of UE, complete RRC and re-establish process, avoid UE call drop, improve network KPI index, promote network efficiency.
Below in conjunction with accompanying drawing, the preferential execution mode of the present invention is elaborated.
Referring to Fig. 6, a kind of method of setting up Radio Resource control connection that inventive embodiments provides comprises:
The RRC that S601, base station receive UE transmission re-establishes request.
According to agreement regulation, the RRC that base station receives re-establishes the relevant information of carrying base station cell in request, and the relevant information that RRC re-establishes the base station cell of carrying in request not necessarily receives the relevant information of community of the base station of request.The relevant information of the base station cell of carrying, comprising: the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that UE is used in base station cell, the Physical Cell Identifier PCI of base station cell, and, UE provide for verify RRC re-establish request legitimacy shortMAC-I.
S602, described base station determine that the state information of described UE is handoff procedure state.
Base station is by the state information of the UE that records in audit memory, and the state information of determining described UE is handoff procedure state.
S603, when the target BS after switching as described UE is determined in described base station, and determine described RRC re-establish request comprise switch after during the relevant information of Target cell, the state information of described UE is revised as to lower state.
When determining that this base station is the target BS after UE switches, and determine described RRC re-establish request comprise switch after during the relevant information of Target cell, base station can determine that UE re-establishes request at the RRC that sends the relevant information of carrying Target cell to Target cell.Particularly, base station determines that according to UE context this base station is the target BS after UE switches, and what according to described RRC, re-establish that PCI that request comprises determines that described RRC re-establishes that request comprises is the relevant information of Target cell after switching.
In handoff procedure, because UE receives to RRC, do not reshuffled the feedback information that information drop-out is relevant, after finding that need to set up RRC connects, the RRC that sends the relevant information of carrying Target cell to Target cell re-establishes request.The relevant information of these target BS communities, is that UE transmission RRC has reshuffled in message switching set-up procedure before, distributes to UE, and informed source base station and sent to UE's by source base station by switch acknowledgment message by target BS.It is rationally and should be received that this type of RRC re-establishes request, and base station can only be refused according to agreement regulation.State set operation is carried out by the UE state information that is recorded as handoff procedure state in base station, handoff procedure status modifier, be lower state (RRC-CONNECTED state), the RRC that UE is carried to target cell information initiation re-establishes process, convert the RRC under stable state to and re-established (re-establishing of the other reasons of namely mentioning in agreement) process, base station can, under the prerequisite without prejudice to agreement, be re-established request to RRC and accept processing.
S604, the corresponding information that needs in described relevant information to verify legitimacy is verified, and after checking is legal, to described UE, is sent RRC and re-establish message, be used to indicate described UE and set up RRC and connect.
Because the state information of UE has switched to lower state, therefore can proceed RRC re-establishes process, and the legitimacy of described relevant information is verified in base station next.The corresponding information that needs in described relevant information to verify legitimacy is verified, specifically comprised: the C-RNTI that described UE is used in Target cell verifies; And the shortMAC-I that described UE is offered to Target cell verifies.
The shortMAC-I that base station offers Target cell to described UE verifies, needs first according to base station canned data, to obtain the shortMAC-I result of calculation of base station side.In prior art, base station side can think that cell-of-origin is the community of UE before RRC re-establishes process, Target cell is the community of UE after RRC re-establishes process, the method that base station side is calculated shortMAC-I comprises: the base station key (KeNB) of the C-RNTI that UE is used in cell-of-origin, the PCI of cell-of-origin and cell-of-origin, cell information as UE before RRC re-establishes process, and, the base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, the cell information as UE after RRC re-establishes process; Cell information according to described UE before RRC re-establishes process and the cell information of described UE after RRC re-establishes process, and KDF, determine that UE need to offer the shortMAC-I of Target cell; ShortMAC-I difference in order to provide with UE, is designated as shortMAC-I*.Consider that UE thinks that RRC re-establishes Ye Shi Target cell, community, place while asking to send, the relevant information of carrying Target cell for RRC is re-established in request also can be proved to be successful at target BS, the shortMAC-I of calculation base station side is specifically carried out in base station according to following algorithm: the C-RNTI that UE is used in Target cell, the PCI of Target cell and the base station key of Target cell, cell information as UE before RRC re-establishes process, and, the C-RNTI that UE is used in Target cell, the PCI of Target cell and the base station key of Target cell, cell information as UE after RRC re-establishes process, cell information according to described UE before RRC re-establishes process and the cell information of described UE after RRC re-establishes process, and secret key deduction function (Key Derivation Function, KDF), determine that UE need to offer the shortMAC-I of Target cell, is designated as shortMAC-I*.*.If shortMAC-I*.* is consistent with shortMAC-I, determine that the shortMAC-I that UE provides is legal; If inconsistent, determine that the shortMAC-I that UE provides is illegal.
Wherein, the base station key of Target cell is according to the base station key of C-RNTI and cell-of-origin, to calculate in advance.
In addition,, when base station determines that while needing in described relevant information to verify that the corresponding information of legitimacy is illegal, base station sends RRC to described UE and re-establishes refuse information, for refusing the RRC that described UE sends, re-establish request.Wherein, base station is determined in described relevant information needs to verify that the corresponding information of legitimacy is illegal, comprising: determine that the C-RNTI that UE uses in Target cell is illegal, and/or, determine that UE offers the shortMAC-I of Target cell illegal.
Referring to Fig. 7, the method providing in conjunction with the present embodiment, X2 interface switch and the cell information that carries target BS to target BS, to initiate the flow process that RRC re-establishes process as follows:
S701, UE send measurement report (Measurement Report) to source base station;
S702, source base station send handover request (Handover Request) message to target BS;
S703, target BS send Handover Request Acknowledge (Handover Request Acknowledge) message to source base station;
S704, UE send RRC connection to source base station and reshuffle (RRC Connection Reconfiguration) message;
S705, source base station are changed (SNStatus Transfer) message to the target BS state that transmits Sequence Number;
S706, UE send RRC connection to target BS and have reshuffled (RRC Connection Reconfiguration Complete) message; Target BS high level does not receive this message;
S707, UE send RRC connection re-establishment request (RRC Connection Reestablishment Request) message to target BS;
S708, target BS send RRC connection re-establishment (RRC Connection Reestablishment) message to UE;
S709, UE send RRC connection re-establishment to target BS and complete (RRC Connection Reestablishment Complete) message;
S710, target BS send RRC connection to UE and reshuffle (RRC Connection Reconfiguration) message;
S711, UE send RRC connection to target BS and have reshuffled (RRC Connection Reconfiguration Complete) message;
S712, target BS are to evolution block core net (Evolved Packet Core, EPC) transmit path switching request (Path Switch Request);
S713, EPC confirm (Path Switch Request Acknowledge) message to target BS reverse-path switching request;
S714, target BS send UE context to source base station and discharge (UE Context Release) message.
Referring to Fig. 8, the method providing in conjunction with the present embodiment, S1 interface switch and the cell information that carries target BS to target BS, to initiate the flow process that RRC re-establishes process as follows:
S801, UE send measurement report (Measurement Report) to source base station;
S802, source base station send to switch to EPC and require (Handover Required) message;
S803, EPC send handover request (Handover Request) message to target BS;
S804, target BS send Handover Request Acknowledge (Handover Request Acknowledge) message to EPC;
S805, EPC send switching command (Handover Command) to source base station;
S806, source base station send RRC connection to UE and reshuffle (RRC Connection Reconfiguration) message;
S807, UE send RRC connection to target BS and have reshuffled (RRC Connection Reconfiguration Complete) message; Target BS high level does not receive this message;
S808, UE send RRC connection re-establishment request (RRC Connection Reestablishment Request) message to target BS;
S809, target BS send RRC connection re-establishment (RRC Connection Reestablishment) message to UE;
S810, UE send RRC connection re-establishment to target BS and complete (RRC Connection Reestablishment Complete) message;
S811, target BS send RRC connection to UE and reshuffle (RRC Connection Reconfiguration) message;
S812, UE send RRC connection to target BS and have reshuffled (RRC Connection Reconfiguration Complete) message;
S813, target BS send switching notice (Handover Notify) to EPC;
S814, EPC send UE context release command (UE Context Release Command) to source base station;
S815, source base station send UE context to EPC and have discharged (UE Context Release Complete) message.
The embodiment of the present invention has realized target BS and has not received UE and send after RRC connects and reshuffled message, and the RRC connection re-establishment request message that target BS sends according to UE, sends RRC connection re-establishment message to UE.
Adopt specific embodiment to make further description below.
Referring to Fig. 9, the complete handling process that base station re-establishes request to RRC comprises the following steps:
The RRC that S901, base station receive UE transmission re-establishes request;
Whether S902, base station are handoff procedure state by inquiry judging UE; If so, perform step S903; Otherwise, execution step S905;
Target cell is determined by UE context in S903, base station, judges whether that UE carries PCI Target cell, Target cell initiation RRC and re-establishes process; If so, execution step S904; If not, execution step S905;
State set operation is carried out in S904, base station, UE is set to RRC and connects (RRC-CONNECTED) state;
S905, base station judge that whether the C-RNTI that RRC re-establishes in request is legal; If so, execution step S906; Otherwise, execution step S913;
S906, base station calculate shortMAC-I by secret key deduction function: if state set operation was carried out in base station, the cell information input secret key deduction function that the PCI of Target cell, C-RNTI, KeNB while are re-established to the forward and backward community of process as RRC obtains shortMAC-I*.*; If state set operation is not carried out in base station, according to existing algorithm, obtain key shortMAC-I*;
S907, base station are taken shortMAC-I*.* or shortMAC-I* and RRC to re-establish the shortMAC-I value of carrying in request and are contrasted; If consistent, execution step S908; If inconsistent, execution step S913;
S908, base station send RRC to UE and re-establish (RRCConnectionReestablishment) message;
S909, base station receive that the RRC that UE sends has re-established (RRCConnectionReestablishmentComplete) message;
S910, base station are sent RRC to UE and are reshuffled (RRCConnectionReconfiguration) message, carry out the configuration of wireless parameter;
The RRC that S911, base station receive UE transmission has reshuffled (RRCConnectionReconfigurationComplete) message;
S912, UE re-establish successfully at base station RRC; Finish;
S913, base station send RRC to UE and re-establish refuse information; UE call drop, initiates RRC connection procedure again; Finish.
For to show difference, the base station key of cell-of-origin is designated as KeNB*, and the base station key of Target cell is designated as KeNB*.*.Below the deduction of shortMAC-I is elaborated.
In S906, referring to Figure 10, the deduction of shortMAC-I* comprises the steps:
S1001, base station calculate the base station key KeNB*.* of Target cell according to the base station key KeNB* of the cell-of-origin of the C-RNTI of Target cell and UE switching;
PCI and the KeNB* of S1002, the C-RNTI that UE is used in cell-of-origin, cell-of-origin, cell information as UE before RRC re-establishes process is input to secret key deduction function, and, the C-RNTI that UE is used in Target cell, the PCI of Target cell and KeNB*.*, the cell information as UE after RRC re-establishes process is input to secret key deduction function;
S1003, by secret key deduction function, calculate MAC-I*, low 16 that get MAC-I* is shortMAC-I*.
In S906, referring to Figure 11, the deduction of shortMAC-I*.* comprises the steps:
S1101, base station calculate the base station key KeNB*.* of Target cell according to the base station key KeNB* of the cell-of-origin of the C-RNTI of this base station cell (Target cell) and UE switching;
The cell information before RRC re-establishes process is input to secret key deduction function as UE for the PCI of S1102, the C-RNTI that UE is used in Target cell, Target cell and KeNB*.*; And the cell information after RRC re-establishes process is input to secret key deduction function as UE for the C-RNTI that UE is used in Target cell, the PCI of Target cell and KeNB*.*;
S1103, by secret key deduction function, calculate MAC-I*.*, low 16 that get MAC-I*.* is shortMAC-I*.*.
Referring to Figure 12, a kind of base station equipment provided by the invention comprises:
Set up message sending unit 1204, for needing the corresponding information of verifying legitimacy to verify to described relevant information, and after checking is legal, to described UE, sends RRC and re-establish message, be used to indicate described UE and set up RRC connection.
Preferably, the relevant information of described Target cell, specifically comprise: the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that UE is used in Target cell, the Physical Cell Identifier PCI of Target cell, and UE offers the short message integrity authentication code shortMAC-I of Target cell.
Preferably, the described message sending unit 1204 of setting up when described relevant information being needed to verify that the corresponding information of legitimacy is verified, specifically comprises: C-RNTI authentication unit 1214, for the C-RNTI that described UE is used in Target cell, verify; And shortMAC-I authentication unit 1224, verifies for described UE being offered to the shortMAC-I of Target cell.
Preferably, described shortMAC-I authentication unit 1224 specifically for:
The base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, cell information as UE before RRC re-establishes process, and, the base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, the cell information as UE after RRC re-establishes process; The base station key of described Target cell is predetermined;
Cell information according to described UE before RRC re-establishes process and the cell information of described UE after RRC re-establishes process, and secret key deduction function (Key Derivation Function, KDF), determine that UE need to offer the shortMAC-I of Target cell;
Judge that described UE need to offer the shortMAC-I of Target cell whether consistent with the shortMAC-I that described UE offers Target cell, if so, determine that UE offers the shortMAC-I of Target cell legal; Otherwise, determine that UE offers the shortMAC-I of Target cell illegal.
Preferably, this equipment also comprises:
Refuse information transmitting element, for when checking is illegal, sends RRC to described UE and re-establishes refuse information, for refusing the RRC of described UE transmission, re-establishes request.
Wherein, status determining unit and state set unit can be realized by processor, request reception unit, set up message sending unit and refuse information transmitting element can be realized by having the transport module of information receiving and transmitting function.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. set up the method that radio resource control RRC connects, be applied to after handoff procedure failure user equipment (UE) and set up RRC with Target cell and be connected, it is characterized in that, the method comprises:
The RRC that base station receives UE transmission re-establishes request;
Described base station determines that the state information of described UE is handoff procedure state;
When the target BS after switching as described UE is determined in described base station, and determine described RRC re-establish request comprise switch after during the relevant information of Target cell, the state information of described UE is revised as to lower state;
The corresponding information that needs in described relevant information to verify legitimacy is verified, and after checking is legal, to described UE, is sent RRC and re-establish message, be used to indicate described UE and set up RRC connection.
2. the method for claim 1, is characterized in that, the relevant information of described Target cell, specifically comprises:
The Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that UE is used in Target cell, the Physical Cell Identifier PCI of Target cell, and UE offers the short message integrity authentication code shortMAC-I of Target cell.
3. method as claimed in claim 2, is characterized in that, the corresponding information that needs in described relevant information to verify legitimacy is verified, specifically comprises:
The C-RNTI that described UE is used in Target cell verifies; And the shortMAC-I that described UE is offered to Target cell verifies.
4. method as claimed in claim 3, is characterized in that, the shortMAC-I that described UE is offered to Target cell verifies, specifically comprises:
The base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, cell information as UE before RRC re-establishes process, and, the base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, the cell information as UE after RRC re-establishes process; The base station key of described Target cell is predetermined;
Cell information according to described UE before RRC re-establishes process and the cell information of described UE after RRC re-establishes process, and secret key deduction function KDF, determine that UE need to offer the shortMAC-I of Target cell;
Judge that described UE need to offer the shortMAC-I of Target cell whether consistent with the shortMAC-I that described UE offers Target cell, if so, determine that UE offers the shortMAC-I of Target cell legal; Otherwise, determine that UE offers the shortMAC-I of Target cell illegal.
5. the method for claim 1, is characterized in that, the method also comprises:
When checking is illegal, described base station sends RRC to described UE and re-establishes refuse information, for refusing the RRC of described UE transmission, re-establishes request.
6. a base station equipment, is characterized in that, this equipment comprises:
Request reception unit, re-establishes request for receiving the RRC of user equipment (UE) transmission;
Status determining unit, for determining that the state information of described UE is handoff procedure state;
State set unit, for the target BS when determining after switching as described UE, and determine described RRC re-establish request comprise switch after during the relevant information of Target cell, the state information of described UE is revised as to lower state;
Set up message sending unit, for needing the corresponding information of verifying legitimacy to verify to described relevant information, and after checking is legal, to described UE, sends RRC and re-establish message, be used to indicate described UE and set up RRC connection.
7. equipment as claimed in claim 6, is characterized in that, the relevant information of described Target cell, specifically comprises:
The Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI that UE is used in Target cell, the PCI of Target cell, and UE offers the short message integrity authentication code shortMAC-I of Target cell.
8. equipment as claimed in claim 7, is characterized in that, the described message sending unit of setting up when described relevant information being needed to verify that the corresponding information of legitimacy is verified, specifically comprises:
C-RNTI authentication unit, verifies for the C-RNTI that described UE is used in Target cell; And shortMAC-I authentication unit, verifies for described UE being offered to the shortMAC-I of Target cell.
9. equipment as claimed in claim 8, is characterized in that, described shortMAC-I authentication unit, specifically for:
The base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, cell information as UE before RRC re-establishes process, and, the base station key of the C-RNTI that UE is used in Target cell, the PCI of Target cell and Target cell, the cell information as UE after RRC re-establishes process; The base station key of described Target cell is predetermined;
Cell information according to described UE before RRC re-establishes process and the cell information of described UE after RRC re-establishes process, and secret key deduction function KDF, determine that UE need to offer the shortMAC-I of Target cell;
Judge that described UE need to offer the shortMAC-I of Target cell whether consistent with the shortMAC-I that described UE offers Target cell, if so, determine that UE offers the shortMAC-I of Target cell legal; Otherwise, determine that UE offers the shortMAC-I of Target cell illegal.
10. equipment as claimed in claim 6, is characterized in that, this equipment also comprises:
Refuse information transmitting element, for when checking is illegal, sends RRC to described UE and re-establishes refuse information, for refusing the RRC of described UE transmission, re-establishes request.
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